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astronomical units

astronomical units is the plural of astronomical unit.

Meaning of astronomical unit

Noun

astronomical unit (plural astronomical units)

  1. 149,597,870,700 metres, the approximate mean distance from the Earth to the Sun (the semi-major axis of Earth's orbit), (symbol AU), used to measure distances in the solar system.
    • Now this big quarter of a Jupiter mass planet is in an orbit about Zeta 2 Reticuli which lasts 18.9 days and has a Semi-Major Axis of 0.14 Astronomical Unit (AU). For comparison Mercury has a Semi-Major Axis of 0.387 AU equal to 36 million miles and Earth has a Semi-Major Axis of 1.00 AU equal to...2000 April 10, Joe LeSearne, “Zeta 2 Reticuli : Home System Of The Greys?”, in http://www.gravitywarpdrive.com/, retrieved 05 Aug 2012
    Synonyms:
    A.U., AU, ua, ㍳, a. u.

Questions about astronomical units

What is astronomical units the plural of?
Astronomical units is the plural of astronomical unit.

Words near astronomical units in the dictionary

  1. astronomical transient
  2. astronomical transients
  3. astronomical twilight
  4. astronomical twilights
  5. astronomical unit
  6. astronomical units
  7. astronomical year
  8. astronomical years
  9. astronomically
  10. astronomick
  11. astronomics

Source and license

Adapted from Wiktionary: astronomical units (page history and authors); astronomical unit (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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